body{
    display: flex;
    justify-content: center;
}
body>div{
    width: 1900px;
}
*{
    margin:0 ;
}


/*!*----------------------------------------top----------------*!*/

/*.top{*/
/*    !*border: 1px solid red;*!*/
/*    font-size: 4px;*/
/*    color: white;*/
/*}*/
/*.top>div:nth-child(1){*/
/*    !*border: 1px solid red;*!*/
/*    display: flex;*/
/*    justify-content: space-between;*/
/*    background-color: orange;*/
/*}*/
/*.top>div:nth-child(1)>div:nth-child(1){*/
/*    margin-left: 400px;*/
/*    !*border: 1px solid red;*!*/
/*    padding: 5px;*/

/*}*/
/*.top>div:nth-child(1)>div:nth-child(2){*/
/*     margin-right :400px;;*/

/*}*/
/*.top>div>div:nth-child(2){*/
/*    display: flex;*/
/*    justify-content: space-between;*/

/*}*/
/*.top>div>div:nth-child(2)>div{*/
/*    display: flex;*/
/*    justify-content: space-between;*/
/*    padding: 5px;*/
/*}*/
/*!*--------------------------------top2-----------------------------------------*!*/
/*.top>div:nth-child(2){*/
/*    color: orange;*/
/*    display: flex;*/
/*    justify-content: space-between;*/

/*    align-items: center;*/
/*}*/
/*.top>div:nth-child(2)>div:nth-child(1){*/
/*    display: flex;*/
/*    justify-content: center;*/
/*    align-items: center;*/
/*    margin-left: 400px;*/
/*}*/
/*.top>div:nth-child(2)>div:nth-child(1)>div:nth-child(1){*/
/*    margin-top: 20px;*/
/*}*/
/*.top>div:nth-child(2)>div:nth-child(1)>div:nth-child(2)>div:nth-child(1){*/
/*    font-size: 30px;*/
/*}*/
/*.top>div:nth-child(2)>div:nth-child(1)>div:nth-child(2)>div:nth-child(2){*/
/*    color: gray;*/
/*}*/
/*--------------------------------导航栏-----------------------------------------*/
.nav{
    color: black;
    /*border: 1px solid red;*/
    margin-right: 500px;
    font-size: 15px;
    align-items: center;


}
.nav>div>div:nth-child(1){
    margin-right: 30px;
    color: white;
}
.nav>div>div:nth-child(2):hover{
    color: orange;
}



/*---------------------------------banner-----------------------------------*/
.banner{
    background-image: url("../img/b.jpg");
    width: 1900px;
    height: 450px;
    /*border: 1px solid red;*/
    font-size: 40px;
}
.banner>div{
    /*margin-left: 950px;*/
    padding-top: 70px;
    /*border: 1px solid red;*/
    padding-left: 950px;
}
.banner>div>div:nth-child(2){
    font-size: 20px;
    padding: 5px;
}
.banner>div>div:nth-child(3){
    font-size: 20px;
    padding: 5px 15px;
    display: flex;
    justify-content: space-between;
}
.banner>div>div:nth-child(3)>div:nth-child(1){
    margin-top: 20px;
    width: 150px;
    height: 50px;
    font-size: 20px;
    background-color:orange ;
    cursor: pointer;
    /*border-radius: 45px;*/
    text-align: center;
    align-items: center;

}
.banner>div>div:nth-child(3)>div:nth-child(2){
    /*border: 1px solid red;*/
    margin-right: 550px;
    background-color:gray ;
    cursor: pointer;
    /*border-radius: 45px;*/
    width: 150px;
    height: 50px;
    margin-top: 20px;
    text-align: center;
    align-items: center;
}
/*---------------------------------middle------------------------------------------*/
.middle{
    /*border: 1px solid red;*/
    margin-left: 400px;
    margin-right: 400px;
    margin-top: -40px;


}
.middle>div>div:nth-child(1){
    /*border: 1px solid red;*/
    display: flex;

}
.middle>div>div{
    /*border: 1px solid red;*/
    display: flex;
    padding: 5px 5px;

}
.av{
    /*border: 1px solid red;*/
}
.av>div{
    display: flex;
    padding: 5px ;
    align-items: center;
    line-height: 15px;
    text-align: center;
    color: white;
    font-size: 15px;
}
.av>div>div:nth-child(1){
    /*padding:  5px ;*/
    margin-right: 5px;
}
.a{
    width: 150px;
    height: 210px;
    background-image: url("../img/1_16-03_u2w6.jpg");
    cursor: pointer;
}
.b{
    width: 150px;
    height: 210px;
    background-image: url("../img/1_16_k2ob.jpg");
    cursor: pointer;
}
.c{
    width: 150px;
    height: 210px;
    background-image: url("../img/1_16_irjp.jpg");
    cursor: pointer;
}
.d{
    width: 150px;
    height: 210px;
    background-image: url("../img/1_16-05_wmvu.jpg");
    cursor: pointer;
}
.e{
    width: 150px;
    height: 215px;
    background-image: url("../img/1_16-04_mv0k.jpg");
    cursor: pointer;
}
.f{
    width: 150px;
    height: 215px;
    background-image: url("../img/1_16-03_u2w6.jpg");
    cursor: pointer;
}
/*---------------------------------------中2----------------------------------------*/
.bv{
    background-color: white;
    border: 1px solid gray;
}
.bv>div:nth-child(1)>div{
    display: flex;
    justify-content: space-between;
}
.bv>div:nth-child(1){
    display: flex;
    justify-content:space-between;


}
.bv>div:nth-child(1)>div:nth-child(2){
    margin-left: 150px;
    color: orange;
    font-size: 3px;
    text-decoration: underline;
    margin-top: 35px;
    margin-right: 20px;
}
.bv>div:nth-child(1)>div:nth-child(1)>div:nth-child(2){
    font-size: 25px;
    margin-top: 25px;
    margin-left: 15px;
}
.bv>div:nth-child(1)>div:nth-child(1)>div:nth-child(1){
    margin-top: -2px;
}
/*=--------------------------------------中2.2-----------------------------------------*/
.cv{
    margin-top: 50px;
    font-size: 10px;
}
.cv>div:nth-child(1){
display: flex;
    justify-content: space-between;
    margin-left: 50px;
    margin-right: 50px;
}
.cv>div:nth-child(2){
    margin-top: 60px;
    display: flex;
    justify-content: space-between;
    margin-left: 50px;
    margin-right: 50px;
}
.cv>div:nth-child(1)>div:nth-child(1)>div:nth-child(1){
    margin-left: 70px;
}
.cv>div:nth-child(1)>div:nth-child(1)>div:nth-child(2)>div:nth-child(1){
    margin-top: 30px;
    font-size: 20px;
    color: orange;
    margin-left: 50px;
}
.cv>div:nth-child(1)>div:nth-child(1)>div:nth-child(2)>div:nth-child(2){
    color: gray;
}
.cv>div:nth-child(1)>div:nth-child(1)>div:nth-child(2)>div:nth-child(2)>div:nth-child(3){
    margin-left: 30px;
}
/*--------------------------------------------------*/
.cv>div:nth-child(2)>div:nth-child(1)>div:nth-child(1){
    margin-left: 70px;
}
.cv>div:nth-child(2)>div:nth-child(1)>div:nth-child(2)>div:nth-child(1){
    margin-top: 30px;
    font-size: 20px;
    color: orange;
    margin-left: 50px;
}
.cv>div:nth-child(2)>div:nth-child(1)>div:nth-child(2)>div:nth-child(2){
    color: gray;
}
.cv>div:nth-child(2)>div:nth-child(1)>div:nth-child(2)>div:nth-child(2)>div:nth-child(3){
    margin-left: 30px;
}
/*----------------------------------------------*/
.cv>div:nth-child(1)>div:nth-child(2)>div:nth-child(1){
    margin-left: 70px;
}
.cv>div:nth-child(1)>div:nth-child(2)>div:nth-child(2)>div:nth-child(1){
    margin-top: 30px;
    font-size: 20px;
    color: orange;
    margin-left: 50px;
}
.cv>div:nth-child(1)>div:nth-child(2)>div:nth-child(2)>div:nth-child(2){
    color: gray;
}
.cv>div:nth-child(1)>div:nth-child(2)>div:nth-child(2)>div:nth-child(2)>div:nth-child(3){
    margin-left: 30px;
}
/*------------------------------------------------------------------*/
.cv>div:nth-child(2)>div:nth-child(2)>div:nth-child(1){
    margin-left: 70px;
}
.cv>div:nth-child(2)>div:nth-child(2)>div:nth-child(2)>div:nth-child(1){
    margin-top: 30px;
    font-size: 20px;
    color: orange;
    margin-left: 50px;
}
.cv>div:nth-child(2)>div:nth-child(2)>div:nth-child(2)>div:nth-child(2){
    color: gray;
}
.cv>div:nth-child(2)>div:nth-child(2)>div:nth-child(2)>div:nth-child(2)>div:nth-child(3){
    margin-left: 30px;
}
/*------------------------------------------------------中2.3---------------------------------------------------------------*/
.dv{
margin-left: 10px;
    border: 1px solid gray;
}
.dv>div:nth-child(1){
    background-color: orange;

    color:white;
    font-size: 30px;
    align-items: center;
}
.dv>div:nth-child(1)>div{
   margin-left: 80px;


}
.dv>div:nth-child(1)>div:nth-child(1){
    margin-left: 80px;
    font-size: 20px;


}

.dv>div:nth-child(2)>div:nth-child(1)>div:nth-child(1){
    display: flex;
    justify-content: space-between;

}
/*.dv>div:nth-child(2)>div:nth-child(2){*/
/*    display: flex;*/
/*    justify-content: space-between;*/
/*    height: 100px;*/
/*}*/
.dv>div:nth-child(2)>div:nth-child(1)>div:nth-child(1)>div:nth-child(2){
    /*border: 1px solid gray;*/
    font-size: 10px;
    line-height: 25px;
    margin-right: 5px;

}
.dv>div:nth-child(2)>div:nth-child(1)>div:nth-child(2){
    width: 250px;
    line-height: 25px;
    /*border: 1px solid red;*/
    margin: 5px 5px 0 5px;

}
.dvfoot{
    margin-left: 100px;
    margin-top: 150px;
    color: orange;
    font-size: 3px;
    text-decoration: underline;

}
/*---------------------------------------------中3---------------------------------------------------------------*/
.middle>div:nth-child(2){
    margin-top: 50px;
}
.ab{
    /*border: 1px solid red;*/
}
.ab>div:nth-child(1){
    display: flex;
    justify-content: space-between;
    /*border: 1px solid red;*/
}
.ab>div:nth-child(1)>div:nth-child(1)>div:nth-child(1){
    color: orange;
    font-size: 20px;
}
.ab>div:nth-child(1)>div:nth-child(2){
    color: orange;
    font-size: 3px;
    text-decoration: underline;
    margin-top: 30px;
    margin-left: 80px;
}
.ab>div:nth-child(2){
    /*border: 1px solid red;*/
}
/*------------------------------------------------------------------------------------------------------------*/
.ab>div{
    display: flex;
    justify-content: space-between;
    /*border: 1px solid red;*/
    /*margin-left: 5px;*/
}
.ab>div:nth-child(3)>div:nth-child(1)>div:nth-child(1){
    color: orange;
    font-size: 20px;
}
.ab>div:nth-child(3)>div:nth-child(2){
    color: orange;
    font-size: 3px;
    text-decoration: underline;
    margin-top: 30px;
    margin-left: 110px;
}
.aba>div{
    margin-left: 15px;
}
/*------------------------------------------------------------------------------------------------------------*/

.ab>div:nth-child(2)>div:nth-child(1)>div:nth-child(1){
    color: orange;
    font-size: 20px;
}
.ab>div:nth-child(2)>div:nth-child(2){
    color: orange;
    font-size: 3px;
    text-decoration: underline;
    margin-top: 30px;
    margin-left: 250px;
}
/*---------------------------------------------------中3.2---------------------------------------------------------*/
.ac{
    border: 1px solid gray;
}
.ac>div:nth-child(1){
    display: flex;
    justify-content: space-between;
}
.ac>div:nth-child(1)>div{
    margin-left: 70px;
    font-size: 10px;
}
.ac>div:nth-child(1)>div:nth-child(1)>div:nth-child(3){
    /*border: 1px solid red;*/
margin-left: -50px;
    font-size: 10px;
}
.ac>div:nth-child(1)>div:nth-child(1)>div:nth-child(2){
    margin-left: -30px;
    font-size: 20px;
    /*margin-right: 20px;*/

}
.aaaa{
    margin-right: 30px;
}
/*-----------------------*/

.ac>div:nth-child(1)>div:nth-child(2)>div:nth-child(3){
    /*border: 1px solid red;*/
    margin-left: -50px;
    font-size: 10px;
    margin-right: 30px;
}
.ac>div:nth-child(1)>div:nth-child(2)>div:nth-child(2){
    margin-left: -30px;
    font-size: 20px;
}
/*---------------------------------------------中3.2.2---------------------------------------*/
.aa>div{
    display: flex;
    /*border: 1px solid red;*/

}
.ad{
    border: 1px solid gray;
    margin-left: 10px;
}
.ad>div:nth-child(1)>div:nth-child(1){
    display: flex;
    justify-content: center;
}
.ad>div:nth-child(1)>div:nth-child(1)>div{
    margin-left: 10px;
    /*border: 1px solid red;*/


}
.ad>div:nth-child(1)>div:nth-child(1)>div:hover{
  color: white;
    background-color: orange;

}
.ad>div:nth-child(2){
    margin-left: 30px;
    margin-top: 70px;

}

.ad>div:nth-child(1)>div:nth-child(2){
    /*border: 1px solid red;*/
    margin-top: 10px;
    margin-left: 10px;
    font-size: 10px;

}
.ad>div:nth-child(1)>div:nth-child(2)>div{
    display: flex;
    justify-content: space-between;
    border-bottom: 1px dashed gray;

}.ad>div:nth-child(1)>div:nth-child(2)>div{
     display: flex;
     justify-content: space-between;
    margin-top: 20px;
     color: gray;

 }
.ad>div:nth-child(1)>div:nth-child(2)>div:nth-child(1)>div:nth-child(2){
   margin-left: 20px;

}
/*-------------------------------------------中3.3---------------------------------------------*/
.ae{
    margin-left: 10px;
    border: 1px solid gray;
    width: 350px;

}
.aea>div{
display: flex;
    justify-content: space-between;
}
.aea>div>div:nth-child(1){
    margin-left: 50px;
    margin-top: 10px;
}
.aeaea{
    margin-left: 10px;
    /*border: 1px solid red;*/
    font-size: 5px;
    margin-right: 50px;
    margin-top: 10px;

}
.aaa{
    width: 250px;
    margin-left: 60px;
    margin-top: 20px;
    margin-right: 50px;
}
/*------------------------------------------------------foot------------------------------------------------------------------------*/
/*.foot{*/
/*   background-color: darkgreen;*/
/*    height: 100px;*/
/*    font-size: 5px;*/
/*    color: white;*/
/*}*/
/*.foot>div{*/

/*    display: flex;*/
/*    justify-content: space-between;*/
/*    margin-left: 400px;*/
/*    margin-right: 400px;*/
/*}*/
/*.foot>div:nth-child(1)>div:nth-child(1){*/
/*    margin-top: 30px;*/
/*}*/
/*.foot>div:nth-child(1)>div:nth-child(2){*/
/*    margin-top: 30px;*/

/*}*/
/*.foot>div:nth-child(2)>div:nth-child(2)>img{*/
/*    margin-left: 5px;*/
/*}*/